GAGG-based gamma-ray detector for in-situ ocean radiation monitoring

Title
GAGG-based gamma-ray detector for in-situ ocean radiation monitoring
Author(s)
이승은; 이재성; 고근배; 백승재; 서정민; 김수미
KIOST Author(s)
Baek, Seungjae(백승재)Seo, Jungmin(서정민)Kim, Soo Mee(김수미)
Publication Year
2019-10-26
Abstract
Frequent monitoring of ocean radiation level in desired sites is required to manage the safety of nuclear power plant operation and rapidly deal with radiation discharge into the ocean. A typical method to measure ocean radiation is to analyze the sampled sea water or sediments in the laboratory [1-2]. However, this method is slow, bulky, and only applicable to restricted ocean sites.
We are developing a novel in-situ ocean radiation monitoring system that features real-time detection of ocean radiation level based on remote ultra-high frequency communication. For gamma-ray detection, we selected Gadolinium Aluminum Gallium Garnet (GAGG) crystal because GAGG features excellent energy resolution, non-hygroscopic property, and no intrinsic activity [3]. Considering the challenge in gamma-ray detection efficiency due to substantial attenuation by water, a large-sized GAGG crystal was used.
We first calibrated the gamma-ray detector consisted of GAGG crystal and silicon multiplier (SiPM). After the calibration, we conducted a water tank experiment of the system to evaluate the feasibility of the detector for ocean radiation monitoring system, targeting Cs-137 detection.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22207
Bibliographic Citation
IEEE Nuclear Science Symposium and Medical Imaging Conference, pp.1 - 2, 2019
Publisher
IEEE Nuclear & Plasma Sciences Society
Type
Conference
Language
English
Publisher
IEEE Nuclear & Plasma Sciences Society
Related Researcher
Research Interests

Computer System,System Software,Storage System,컴퓨터 시스템,시스템 소프트웨어,스토리지 시스템

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